I am getting ready to start to work on the carb and want to get some parts for it. I have not taken apart a carb for an onan before. Does anybody have any exploded views or manuals for my tractor, motor or carb. Anything that I can download or print off would be great. I tried to download a manual from the forum on here and didn't have any luck. Obviously the motor and carb are not original but any kind of manuals ect will help. Also can anyone tell me what year this tractor/ Motor is?

No, not a BF. This one is a 20hp with 3 1/4" bore. The BF has 3 1/8" bore. Should have a carb like a B48 Onan, but I can't remember for sure. Get those numbers off the carb & post them, it will help. I think maybe the tractor is a 72 or close to that. I think it has some yellow paint underneath the flambeau red.

No, not a BF. This one is a 20hp with 3 1/4" bore. The BF has 3 1/8" bore. Should have a carb like a B48 Onan, but I can't remember for sure. Get those numbers off the carb & post them, it will help. I think maybe the tractor is a 72 or close to that. I think it has some yellow paint underneath the flambeau red.

Could well be that carb on your tractor came off a generator, as we got a LOT of parts in that big purchase & put the engine together from it. Looks like the pproper kit. That carb looks pretty good shape. If intending to buy the carb, compare the linkages carefully to make sure all will hook up fine.

I didn't know which I would be better off doing. I was going to take a video of it running but haven't yet. It had a broken choke cable I replaced it with one from the parts tractor. I can now idle it way down now without it dying but its like it only hits about 2 times out of five and actually backfired through the carb once. It has me thinking that it might be electrial also.? But I am still probably going take it apart and clean it first and worry about kits and electrical later. I will try and post a video of it later.

I'm no expert on Onan's but that look's just like the carb that's on my neighbors Wheel Horse it has an Onan 16hp on it.
Last year it wasn't running right so I took the top off it, (need to disconnect the choke) found crap in the bottom of the float bowel, cleaned it out and it ran OK after that. His had a drain for the bowel which was also access to the main jet.
All this was done without removing the carb.